List of products by brand Adafruit

Out-of-Stock
Feather nRF52 Bluefruit LE - nRF52832
Out-of-Stock
nRF52 Bluetooth LE Feather - nRF52832
ARM Cortex M4F @ 64MHz
512KB flash
64KB SRAM
nRF52832 - Bluetooth Low Energy, 2.4GHz
1.7v to 3.3v
19 GPIO, 8 x 12-bit ADC, up to 12 PWM outputs
Optional SWD connector for debugging
Out-of-Stock
RFM69HCW Transceiver Radio Breakout - 433 MHz - RadioFruit
Out-of-Stock
RFM69HCW at 433Mhz
SX1231 based module with SPI interface
50mA to 150mA
~30mA during active radio listening.
Packet radio with ready-to-go Arduino libraries
Uses the amateur or license-free ISM band (ITU "Europe" license-free ISM)
Use a simple wire antenna or spot for uFL or SMA radio connector
500m to 2Km, even 5 (depending on the Antenna)